Gate-valve.



G. HANLEY.

GATE VALVE;

APPLICATION FILED APR.4, 1911.

1,006,084, Patented Oct. 17,1911.

ZSHBBTS-SHEET 2.

WITNE SE5 INVENTOR 204M 21 IJOLUMfi lA PLANOGRAPH CO.,WASHINGTON D c UNI GEORGE HANLEY, 0F MALIDEN, MASSACHUSETTS.

GATE-VALVE.

To all whom it may concern:

Be it known that I, GEORGE HANLEY, a subject of the King of Great Britain, residing at Malden, in the county of Middles-ex and State of Massachusetts, have invented certain new and useful Improvements in Grate-Valves, of which the following is a specification.

This invention relates to a gate valve forming a part of a conduit, and as here shown is embodied in a gate valve formed to connect a hydrant with a length of fire hose and adapted to be opened and closed to control the flow of water from the by drant to the hose.

The invention has for its object to provide a gate valve having a gate which is movable edgewise to open and close it, and is adapted to be pressed firmly against its seat when closed, the construction being simple, durable, compact and free from liability to leakage.

The invention consists in the improvements which I will now proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a plan view of a gate valve embodying my invention, the valve being closed. Fig. 2 represents a section on line 2-2 of Fig. 1. Fig. 3 represents a view similar to Fig. 2, showing the valve open. Fig. 4 represents a section on line 44 of Fig. 3. Fig. 5 represents a fragmentary sectional View, showing a modification.

The same reference characters indicate the same parts in all of the figures.

The casing of my improved valve is tubular and forms a part or section of a conduit adapted, in the embodiment of the invention here shown, to conduct water from a hydrant to a fire hose, one end of the casing being'adapted to be detachably coupled to the hydrant and the other end to the hose.

Referring first to Figs. 1, 2, 3 and 4., the casing is composed of a central section 12 and end sections 12 and 12 the said end sections being externally screw-threaded and engaged with internal screw-threads in the section 12, as shown by Figs. 2 and 3. The end section 12 is adapted to be coupled to a hydrant, and is here shown as provided with an internal screw-thread 13, for this purpose. The end section 12 is shown as provided with an external screw-thread 14. whereby it may be coupled to a length of Specification of Letters Patent.

Application filed April 4, 1911.

Patented Oct. 17, 1911.

Serial No. 618,812.

hose. 15 represents an annular valve seat which surrounds the passage through the casing, and is preferably formed by the inner end of the section 12. Said seat is preferably grooved to receive a compressible packing-ring 16. 17 represents a pocket, which is cast on the central section '12 of the casing and projects from one side thereof, one side of the chamber or cavity 17 of the pocket being substantially in alinement with the valve seat 15. The interior of the pocket communicates with the interior of the casing, the pocket being adapted to receive the gate hereinafter described, when the valve is opened. 18 represents a gate, which is a metallic disk, one side ofwhich is formed to bear on the seat 15. \Vhen the valve is closed, as shown by Fig. 2, one edge of it projects slightly into the pocket 17, the form of the valve and pocket being such that the valve is movable edgewise from the position shown in Fig. 2, to that shown in Figs. 8 and 4, and when so moved, the greater portion of it is located in the pocket 17. 19 represents a clamping-ring, which is externally screw-threaded to engage an internal screw-thread 20, formed on the ,casing section 12, at one side of the valve seat. The ring 19 surrounds the passage through the casing, its inner surface being preferably flush with the inner surface of the end section 12*. The clamping-ring 19 is provided with a stud or shank 21, which is rigidly attached to the ring and projects outwardly therefrom through a segmental slot 22 in the casing section 12. The ring covers the slot-containing portion of the inner surface of the casing and shuts off said slot from the interior of the casing. The ring 19 may be rotated by power-applied to the shank 21, the extent of rotation being limited by the length of the slot 22. The rotation of the ring in one direction causes it, by reason of its screw-threaded engagement with the casing, to move toward the valve seat 15 and bear on the outer side. of the valve, thus pressing the gate against the seat. A rotation of the ring 19 in the opposite direction moves it away from the valve seat, thus relaxing its pressure on the seat.

The gate and the clamping-ring are eccentrically connected or coupled together in such manner that a rotation of the ring in one direction causes an edgewise movement of the gate into the pocket 17 thus opening the valve, while the rotation of the ring in the opposite direction moves the gate edgewise out of the pocket and upon the seat 15. The eccentric connection between the clamping-ring and gate is of such nature that it permits the described movements of the clamping-ring toward and from the valve seat without affecting its connection with the gate. As here shown, the said connection includes a stud or pin 23, eccentrically located on the gate and projecting outwardly therefrom, and a socket 24: located eccentrically on the clamping-ring and having both a liding and a rotative fit upon the stud 23, so that when the clamping-ring is rotated to move it away from the valve seat and open the gate, the socket 24 moves outwardly on the stud 23, as shown by Fig. 3. I

25 represents a sleeve, which surrounds and covers the slot-containing portion of the outer surface of the casing, the sleeve being externally screw-threaded and engaging an external thread 28 formed on the casing section 12. The shank 21 is engaged with the sleeve 25, the latter having an orifice which closely fits the periphery .of the shank, hence, the shank connects or couples together the sleeve 25 and the clamping-ring 19, so that the two necessarily rotate together. The shank 21 projects from the periphery of the sleeve 25 and is adapted to be engaged by the spanner or other tool, used to rotate the clampingring. The ring 25 may be provided with one or more additional tool-engaging shanks 26.

It will now be seen that when the gate is pressed on the seat 15 to close the valve, a partial rotation of the clamping-ring 19 from the position shown by Figs. 1 and 2, to that shown by Figs. 3 and 4, will simultaneously move the clamping-ring outwardly from the gate, thus relaxing the clamping pressure, and move the gate edgewise into the pocket 17. When the clamping-ring 19 is turned in the opposite direction, it moves the gate outwardly from the pocket, and at the same time, is moved toward the gate so that by the time the gate is fully seated on the seat 15, the ring 19 bears on the gate and presses it against the seat.

The eccentric location of the stud 23 and socket 24 causes said parts to move in a circular path when the ring 19 is rotated. The gate is prevented, by the straight portions of the pocket which bear on its perimeter, from moving in the arc of a circle, the gate being therefore guided by said portions and shifted in a rectilinear path from and to its closed position.

It is obvious that the edgewise movements of the gate, and the pressure of the gate against its seat, and the relaxing of such pressure may be caused by a rotary movement of the casing, the clamping-ring being fixedly held against rotation.

details of construction here shown and described.

While I prefer to provide for an endwise movement of the ring 19, which causes the edgewise movements of the gate, in order that said ring may be caused to press the gate against the seat 15, when the valve is closed and to relax said pressure in opening the valve, I do not limit myself to a screw thread connection between said ring and the casing. In Fig. 5 I show as a substitute for the externally threaded ring 19, a ring having a smooth external surface fitting a smooth internal surface on the casing member 12, a sleeve 25 having a smooth internal surface, being substituted for the internally threaded sleeve 25. The sleeve 25 and ring 19 are connected by the stud 21, which is movable in a slot 22, in the casing as described with reference to Figs. 1, 2, 3, and 4.

. The rotation of the ring 19 is not therefore accompanied by an endwise movement of said ring, so that the only functions of the ring are to confine the gate against the seat, and to move the gate into and out of the pocket. A packing ring is in this modification inserted in the inner end of the ring 19 the pressure of the water on the inner side of the gate holding the outer side of the gate against said packing. The inner end of the ring 19 and the adjacent end of the casing member 12 constitute guides for the 1 gate. The ring 25 or 25 constitutes a gateshifting member which is rotatable in the casing and is so formed that it does not obstruct the conduit passage.

I claim 1. A gate valve comprising a casing formed as a conduit and having a seat sur rounding the conduit passage, and a gate pocket projecting laterally from the casing, a gate adapted to bear on said seat and movable to and from the pocket, a gate-shifting member rotatable about the conduit passage within the casing without obstructing the said passage, an eccentric connection between the said member and thegate whereby a partial rotation of the member relatively to the casing is caused to shift the gate, and means for imparting to one of the parts, termed respectively the shifting member and the casing, a gate-shifting. movement.

2. A gate valve comprising a casing forming a conduit and having a seat surrounding the conduit passage and a gate pocket projecting laterally from the casing, a gate adapted to bear on said seat and movable to and from the 130 pocket a gate-confining ring rotatable within the casing and surrounding the conduit passage, an eccentric connection between the ring and the gate whereby a partial rotation of the ring is caused to shift the gate, and means for moving one of the parts termed respectively the casing and ring relatively to the other part to shift the gate.

3. A gate valve comprising a casing forming a conduit and having a seat surrounding the conduit passage, a gate pocket projecting laterally from the casing, and a segmental slot in. one side of the casing, a gate adapted to bear on said seat and movable to and from the pocket, a gate-confining ring surrounding the conduit passage and rotatable relatively to the casing, said ring covering the slot-containing portion of the inner surface of the casing and having an operating shank or handle which projects outwardly through the slot, whereby the ring may be rotated relatively to the casing, and an eccentric connection between the ring and gate whereby a partial rotation of the ring is caused to shift the gate.

4. A gate valve comprising a casing forming a conduit and having a seat surrounding the conduit passage, a gate pocket projecting laterally from the casing, and a segmental slot in one side of the casing, a gate adapted to bear on said seat and movable to and from the pocket, a gate-confining ring surrounding the conduit passage and rotatable relatively to the casing, said ring covering the slot-containing portion of the inner surface of the casing and having an operating shank or handle which projects outwardly through the slot, whereby the ring may be rotated relatively to the casing, an external sleeve covering the slot-containing portion of the outer surface of the casing and connected with the said ring to rotate therewith, and an eccentric connection between the ring and gate whereby a partial rotation of the ring is caused to shift the gate.

5. A gate valve comprising a tubular cas ing having an annular seat and a laterally projecting gate pocket, a gate adapted to bear on said seat and movable edgewise relatively thereto, a clamping-ring rotatable in the casing and having a screw-thread connection therewith, the said ring being movable by said connection toward and from the valveseat when the ring is rotated, and thus caused to either press the gate against the seat, or to relax the pressure, the gate being provided with an eccentrically arranged stud and the ring with an eccentrically arranged socket in which the stud has a sliding and rotative fit.

6. A gate valve comprising a tubular casing having an annular seat, a laterally projecting gate pocket, and a slot substantially parallel with the seat, the casing being internally threaded, a gate adapted to bear on the seat and movable into and out of the pocket, and an externally threaded clamping-ring engaged with the internal thread of the casing and eccentrically coupled to the gate, said ring being provided with an operating shank or handle which projects outwardly through said slot.

7. A gate valve comprising a tubular casing having an annular seat, a laterally projecting gate pocket, and a slot substantially parallel with the seat, the casing being threaded both internally and externally, a gate adapted to bear on the seat and movable into and out of the pocket, an externally threaded clamping-ring engaged with the internal thread of the casing and eccentrically coupled to the gate, an internally threaded sleeve engaged with the external thread of the casing and covering said slot, and a shank attached to the clamping-ring and sleeve and coupling said parts together, said shank projecting outwardly from the sleeve.

8. A gate valve comprising a casing forming a conduit and having a seat surrounding the conduit passage, a gate pocket projecting laterally from the casing, and a segmental slot in one side of the casing, a gate adapted to bear on said seat and movable to and from the pocket, a gate-confining ring surrounding the conduit passage and rotatable relatively to the casing, said ring covering the slot-containing portion of the inner surface of the casing and having an operating shank or handle which projects outwardly through the slot, whereby the ring may be rotated relatively to the casing, and an eccentric connection between the ring and gate whereby a partial rotation of the ring is caused to shift the gate, means being provided between the ring and easing at opposite sides of the slot to prevent leakage of fluid between the ring and casing and through the slot.

In testimony whereof I have affixed my signature in presence of two witnesses.

GEORGE HANLEY.

Witnesses:

HARRY L. ALLEN, O. F. BROWN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

